Groundsheets TYVEK® Genuine Tyvek® 1056D fabric from Dupont SIZE & WEIGHTSmall: 20"x27" - 0.69oz (19g)Medium: 29"34" - 1.28oz (36g)Large: 37"x58" - 2.74oz (77.5g)Jumbo: 60"x96" - 7.8oz (220g) SIZE USESSmall: Personal small groundsheet or door mat for laying out gear out at camp. Perfect place to put your shoes on. Small but functional.Medium: Same use as our small but more room for more gear.Large: Perfect for larger camp setups with multiple people and more gear.Jumbo: This is your DIY size. This is the size you want for tent footprints or ground sheets for any 2 person tent or smaller. You should cut this sheet down just a few inches smaller than your tent so that it doesn't catch any rain. Note About Holes Cut Into CornersHoles are cut into the corners of the small, medium and large groundsheets. The jumbo does not have any precut holes. These holes are perfect for staking out sheets when needed. These holes are NOT reinforced to keep weight down. Not intended to be hung as tarp from these holes. Ground use only. ABOUT OUR TYVEK® SHEETSOur sheets come unbranded without any printing. Tyvek has long been used as a relatively inexpensive material for things like groundsheets. It's resistant to mold, mildew, and dust particles while also being hard to rip or tear. Spunbonded Fabric weight ~1.62oz/yd 2 (55 gsm) CUSTOM PRINTED GROUNDSHEETS?Yep, we make those too. Go here groundsheet ground sheet mat doormat footprint foot print tent porch